Shuttle-threader.



G. H. HULL.

SHUTTLE THREADER.

APPLIOATION FILED MAR. 23, 1911.

Patented July 15, 1913.

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GEORGE H. HULL, OF CR-ANSTON, RHODE ISLAND, ASSIGNOR TO 1). RUSSELLBROWN, OF PROVIDENCE, RHODE ISLAND.

SHUTTLE-THREADER.

Specification of Letters Patent.

Application filed March 23, 1911.

Patented July 15, 1913. Serial No. 616,407.

To all whom it may concern:

Be it known that I, Gnonen II. HULL, a citizen of the United States, andresident of Cranston, in the county of Providence and State of RhodeIsland, have invented certain new and useful Improvements inShuttle-Threaders, of which the following is a specification.

This invention relates to vacuum shuttle threading device and has forits object to provide an extremely simple, inexpensive and practicaldevice of this character comprising a piston operatively mounted in acylinder, said piston being adapted to be forced inward through atubular piston rod communicating with the interior of said cylinder, afulcrum member being also provided under which the end of the shuttle isplaced so that the shuttle itself when positioned serves as acomparatively long lever to easily press inward the enlarged piston toquickly draw the thread through the eye of the shuttle. It is found inthe practical operation of a device of this character that the same mustbe quick and positive in its operation, and therefore must have a largepiston area whereby a very short stroke will produce sutlicient vacuumto quickly draw the thread through the eye of the shuttle. To operate solarge a piston quickly requires considerable force, therefore I haveprovided a fulcrum member whereby the shuttle itself may be employed asa comparatively long lever when positioned on the threader to quicklyand easily press the piston inward and produce the required vacuum todraw the thread through the eye thereof.

Another feature of this invention is the provision of a mouth piecehaving an elongated opening sufliciently large to receive any or all ofa plurality of shuttle eyes arranged a short distance apart along theside of the shuttle as is the case in some makes of shuttles, and toprovide a raised cushion lip around this opening adapted to yield andshape itself to the contour of the shuttle as the same is pressedagainst it to form an air-tight month about the shuttle eye or eyes.

lVith these and other objects in view, the invention consists of certainnovel features of construction, as will be more fully described andparticularly pointed out in the appended claims.

In the accompanying drawings: Figure 1 is a sectional side elevation ofmy improved shuttle threader showing the shuttle in dotted lines inposition to serve as a lever to operate the threader. Fig. 2 is a topview of the mouth piece showing the elongated opening therethrough withthe raised lip around it. Fig. 3- is a side elevation of the mouth pieceshowing the an nular face of the raised lip. Fig. -lis a plan view ofthe binding member adapted to fit around the edge of the mouth pieceplate and to removably secure the same to the flange of the tubularpiston rod. Fig. 5- is a central sectional elevation of the yoke. Fig. 6is a front view of the hind mg member.

Referring to the drawings, 1 designates a portion of the loom frame and2 a cylinder preferably formed of thin metal having a flange 3 on itslower edge secured in position to the frame by means of screws 4. Thelower ed 'e of this cylinder is provided with openings 5 through whichthe air may pass when the piston is forced inward. The outer end of thiscylinder is provided with a head 6 having an outwardly turned neckportion 7 through which a hollow piston rod 8 is adapted to reciprocate.The inner end of this piston rod is flanged as at 9 and connected to apiston 10, the latter having a packing 11. and being adapted toreciprocate in the cylinder 2. The inner end of this tubular piston rodprovided with openings 12 into the cylinder above the piston wherebywhen the piston is depressed the air is sucked through the hollow rodand holes into the cylinder. The outer end of this piston rod isprovided with a large outwardly turned flange 13 upon the face of whichrests a mouth piece 14: of rubber or other suitable flexible material.This month piece comprises a thin circular plate 15 cor responding insize to the outer diameter of the flange 13. The center of this plate isprovided with an elongated opening 16 of a length sufficient to covereither one, two, three or four shuttle eyes whereby any or all of theeyes in the shuttle of this character may be threaded by application tomy improved vacuum shuttle threader. A raised flexible lip 17 is formedall around this opening 011 an angle to the body of the plate, asillustrated in Figs. 1 and 8, for the purpose of permitting the shuttle18 to be applied thereto on an incline as illustrated in Fig. 1 as themost natural position in which to engage the threader when in the handof the operator.

The plate or flange 15 comprising the body of the mouth piece iscomparatively thin and I therefore reinforce the same about its outeredge by a thin steel ring or washer 20. It is found in practice thatwhen these flexible lips become worn, as they will by constant use, itis desirable to readily remove the same and replace the mouth piece witha fresh one. In order to readily effect this change I have provided acoupling or binding member 19, see Fig. 4, the same being formed insubstantially a U-shape from end to end, and also in a U-shape in crosssection, as illustrated in Fig. 5, whereby it is adapted to be passedover both the edge of the washer 20 on the flange 15 of the mouth pieceand under the edge of the flange of the tubular piston rod whereby themouth piece is firmly secured in position. A fulcrum member 21, seeFigs. 1 and (3, is provided with feet 22 and extends outward from thecylinder 2, or other convenient place, in position to engage the end ofthe shuttle,'the shape of the fulcrum member being such as to perform adouble function, first to limit the forward position of the shuttle soas to insure the proper positioning of the eye or eyes to be threadedover the opening through the mouth piece, and sec- 0nd, it provides afulcrum against which the end of the shuttle may rest whereby the bodyof the shuttle itself may be used as a lever for pressing inward thepiston against the pressure of the spring 23 and the vacuum in thecylinder.

I claim:

1. A shuttle threader comprising a pump having a movable member formedwith an opening over which the eye of a shuttle is adapted to be placed,and a relatively stationary fulcrum member adjacent said movable pumpmember to engage an end portion of the shuttle and hold it stationary toenable the shuttle to be used as a lever to actuate said movable memberto reduce atmospheric pressure within the pump.

2. A shuttle threader comprising a cylinder, a piston in said cylinder,a tubular piston rod opening into said cylinder, a cushion mouth pieceon the outer end of said rod and provided with an aperture over whichthe eye of the shuttle may be placed, and a relatively fixed fulcrummember for engaging the end of the shuttle to be threaded whereby aleverage may be obtained to force the piston inward.

In testimony whereof I afliX my signature in presence of two witnesses.

GEORGE H. HULL. lVitnesses HOWARD E. BARLow, E. I. OGDEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

